2807940 uATX Motherboard
Page 120
B.1 DIO Interface Introduction
The DIO connector on the 2807940 is interfaced to GPIO ports on the ITE IT8712F Super
I/O chipset. The DIO has both 4-bit digital inputs and 4-bit digital outputs. The digital inputs
and digital outputs are generally control signals that control the on/off circuit of external
devices or TTL devices. Data can be read or written to the selected address to enable the
DIO functions.
NOTE:
For further information, please refer to the datasheet for the ITE
IT8712F Super I/O chipset.
B.2 DIO Connector Pinouts
The following table describes how the DIO connector pins are connected to the Super I/O
GPIO port 1.
Pin
Description
Super I/O Pin
Super I/O Pin Description
1 Ground
N/A
N/A
2 VCC
N/A
N/A
3
Output 3
GP27
General purpose I/O port 2 bit 7.
4
Output 2
GP26
General purpose I/O port 2 bit 6.
5
Output 1
GP25
General purpose I/O port 2 bit 5.
6
Output 0
GP24
General purpose I/O port 2 bit 4.
7
Input 3
GP23
General purpose I/O port 2 bit 3.
8
Input 2
GP22
General purpose I/O port 2 bit 2
9
Input 1
GP21
General purpose I/O port 2 bit 1
10
Input 0
GP20
General purpose I/O port 2 bit 0
Summary of Contents for 2807940
Page 1: ...x x 2807940 User s Manual Micro ATX Motherboard with LGA 775 Socket Version 1 0 ...
Page 17: ...2807940 uATX Motherboard Page 1 1 Introduction Chapter 1 ...
Page 24: ...2807940 uATX Motherboard Page 8 2 Detailed Specifications Chapter 2 ...
Page 55: ...2807940 uATX Motherboard Page 39 3 Unpacking Chapter 3 ...
Page 59: ...2807940 uATX Motherboard Page 43 4 Connector Pinouts Chapter 4 ...
Page 88: ...2807940 uATX Motherboard Page 72 5 Installation Chapter 5 ...
Page 120: ...2807940 uATX Motherboard Page 104 6 Intel AMT Configuration Chapter 8 ...
Page 130: ...2807940 uATX Motherboard Page 114 A Terminology Appendix A ...
Page 135: ...2807940 uATX Motherboard Page 119 B DIO Interface Appendix B ...
Page 138: ...2807940 uATX Motherboard Page 122 C Watchdog Timer Appendix C ...
Page 141: ...2807940 uATX Motherboard Page 125 D Address Mapping Appendix D ...
Page 144: ...2807940 uATX Motherboard Page 128 E Compatibility Appendix E ...
Page 147: ...2807940 uATX Motherboard Page 131 F Intel Matrix Storage Manager Appendix F ...
Page 161: ...2807940 uATX Motherboard Page 145 G Hazardous Materials Disclosure Appendix G ...